Motor protection circuit breaker for the line side
Rated operating voltage spans 20 to 690 V, and the interrupting capacity reaches 100 kA at 400 V and 500 V, dropping to 10 kA at 690 V — a figure that governs selectivity with the upstream feeder breaker in a motor control centre. Spring-loaded terminals accept 2x 0.5 to 2.5 mm² solid or stranded conductors.
The 3RV2011-1DA25 occupies a 45 mm wide footprint on the DIN rail, with a depth of 97 mm and height of 106 mm — that leaves room for a contactor alongside in the same 45 mm slot, provided the side clearance of 30 mm is observed for heat dissipation.
Auxiliary contact ratings and switching frequency
The integrated auxiliary contact is rated 1 A at 24 V, 0.5 A at 120/125/230 V, and 0.15 A at 60 V — these are the switching capacities for the signal circuit, not the main power path, so they suit a PLC input or a contactor coil, provided the coil inrush does not exceed the 1 A at 24 V limit. Maximum switching frequency in AC-3 duty (motor starting) is 15 operations per hour, which matches the typical jogging rate for a conveyor or pump start — not a high-cycle servo axis.